Max vs Maya translation times

[snivlem]

Hi,

Just noticed on recently setting up a trial of Max and V-Ray 3.3, that for a scene with two million polys there is a massive discrepancy in translation times

3DS Max = .8 seconds
Maya = 1 minute 13.3 seconds

Is this something that can be improved on or is it an unfortunate limitation with Maya?

[FSGFX]

as far as i know max does not have to translate the scene... vray will render the stuff native...

[super gnu]

yes as above.. its probably related to the fact that vray is a native renderer in Max. (all?) other versions use a connection to vray-standalone, and require scene translation.

[vlado]

Is this something that can be improved on or is it an unfortunate limitation with Maya?

It's very likely that it can be improved. If you can get us that specific scene for testing, it will be very helpful to figure out what can be done about it.

Best regards,
Vlado

[jasonhuang1115]

yes as above.. its probably related to the fact that vray is a native renderer in Max. (all?) other versions use a connection to vray-standalone, and require scene translation.

What is preventing Vray from being a native renderer in Maya? Can it be a Maya native renderer one day?

[vlado]

What is preventing Vray from being a native renderer in Maya? Can it be a Maya native renderer one day?

No; Maya does not expose its scene geometry in the same way as 3ds Max does. With that said, there are probably things that can be done to optimize the process.

Best regards,
Vlado

[jasonhuang1115]

Sad....but thanks Vlado.

[Komposer]

Hi,
for me, the translationg times are sometimes much to high too, when I´m rendering with DR.
When DR is "Off", the render starts very fast, is DR "On" it needs much more time for starting render process.
As example... while working on a vessel scene with different cameras (150mb scene size),
I decided, as usualy, to put 5 bigger regions into 5 groups, than I can switch their visibility on or off, if I need them or not.
The translation time becomes nearly 45s.
But when I switch the 5 groups off, the translation time is the same! Nearly 45s.
When I delete the 5 groups the translation time shrinks to nearly 10s!
I think, that vray translate in every situation the whole scene and not only the visible parts.
Is this possible? Don´t know how I can test that, but I´m realy shure.
To translate only the needet scene parts, could be a big timesaving step.
Maybe I didn´t found the correct switch for that turbo!?
Cheers Jörg
(Win7, Maya2015, Vray3.3002)
Edited!

[snivlem]

It's very likely that it can be improved. If you can get us that specific scene for testing, it will be very helpful to figure out what can be done about it.

Best regards,
Vlado

Hi Vlado, sure thing.

This particular case, the model is a high polygon tree. It is a commercial model, so I can't upload here. Did you want me to upload them to oneDrive and PM you the link?

Obviously I eventually turn these sorts of models into proxies but sometimes on other objects it's not always a solution.

[vlado]

Yes, you can email me a onedrive link to vlado@chaosgroup.com - thanks!

Best regards,
Vlado

[kosso_olli]

Yes, you can email me a onedrive link to vlado@chaosgroup.com - thanks!

Best regards,
Vlado

Vlado, will send some scenes, too. The Maya guys have the same problem all the time. In Max the render starts almost instantly, in Maya it takes much longer.

[ricorio]

I always put objects/groups I don't really need to see right now in the render on layers and switch their visability ... that works fine for vray to translate the scene faster.

[t.petrov]

We made serious improvements to the translation time for polygonal objects in the 3.10, but I guess we can do even better.
If you can share scenes, we will be happy to look at them and try to improve the performance.
In general scenes with <10m polygons should translate for 5-10-20 seconds maximum. If this is not the case then there is some problem.

[t.petrov]

@snivlem:
I've got your scene. On my machine i7 5820 on Linux it exports for 23 seconds.
I've profiled it and I think I know what to do to make the translator faster.
My prediction is that it is possible to lower the export time to 12-15 seconds for this scene.

[snivlem]

Sounds good! Thanks for taking a look at this.

I have one model that I gave up on after 5 minutes of waiting for it to translate if you would like this as well. It was under 5M polygons. I think it might be the multiple shaders to one object